大兴安岭聚煤区是早白垩世聚煤沉积。
Daxinanling gathers the coal district is the early chalk world gathers the coal deposition.
山东聊城地区阿城镇煤田是华北聚煤区的一部分，是我国重要煤产地和煤炭工业基地之一。
As part of the North-China coal Accumulate Area, a 'cheng Town, which locates in the LiaoCheng City, Shandong Province, is one of the most important coal-producing and coal-related industry bases.
山东聊城地区阿城镇煤田是华北聚煤区的一部分，是我国重要煤产地和煤炭工业基地之一。
As part of the North-China coal Accumulate Area, a 'cheng Town, which locates in the LiaoCheng City, Shandong Province, is one of the most important coal-producing and coal-related industry bases.
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